二重的

V-shape grooves exist in twinned crystal planes of fivefold twin. As for thermodynamics and kinetics, the grooves are helpful for diamond grains of fivefold twin to grow.

正二十面体和正十面体颗粒都是"五重孪晶"结构，在颗粒表面上与五重孪晶面对应的区域形成V-形槽，这种V-形槽对五重孪晶金刚石颗粒的长大有热力学和动力学的有利作用。

But , when we changeour trainofthought , we can find that sometimes using mathematical Analysis is a better solution to the linear algebraic problems.In thispaper, use the propertyofcontinuous function andimproper integralof infinite interval and to solve some matrix and quadratic form problems.Algebraic ideas andmethodstosolvemathematical analysisproblems are indicated by several specific examples. Close contactof differentmathematical analysis fields is shown.

该文探讨运用数学分析的有关知识（如：函数连续性、无穷区间的广义积分）和方法解决高等代数中的某些复杂、繁琐的问题；通过具体的实例，阐述高等代数的思想和方法在解决数学分析问题中的作用，揭示不同的数学领域之间的密切联系，例如：二次型与正交变换是代数学的基本内容，其用途十分广泛，而重积分的计算往往存在技术性的困难，若利用"二次型"与"正交变换"的有关理论去解决某些重积分的计算问题是颇有功效的。

The main results were as follows:An appropriate concentration of ethephon sprayed on leaves of peanut made stems and branchs height shorter,but more branches;The fresh weight and dry weight per unit of leaf area and per plant increased;It optimized some physiological and biochemical characteristics in the leaves.It was showed that the ethephon increased obviously the contents of protein and chlorophyll and the activity of SOD and POD in the leaves,and improved the rates of photosynthesis and transpiration of the leaves,and increased the activity of the roots,but decreased the content of MDA in the leaves;It improved the quantity of pods,the percentage of plumy pods and the peanut yield.

结果表明：喷施适宜浓度的乙烯利可使植株相对矮化，抑制花生地上部分的生长，使主茎和分枝长比对照短，但分枝数较多；提高单位叶面积鲜重、干重以及植株鲜重、干重；优化花生植株的生理生化特性，表现为显著提高了花生叶片的蛋白质含量和叶绿素含量及SOD和POD活性，增强了花生叶片的光合速率和蒸腾速率，增强了主根活力，降低了花生叶片的丙二醛和可溶性糖含量；提高植株的单株结荚数、饱果率和产量。

Results of the experiment show that, 1 proper semi-solid remelting temperatures of the alloy is in the range of 570℃-571℃; 2 in the condition of optimized reheating processing, the temperature deviation in a billet is O℃-1℃; 3 dendritical colonies of a phase in original billet changed into isolated grains with forms of nodules and granule, which may satisfy the need of semi-solid thixoforming forming in theory.

实验结果表明：1该合金合理的半固态二次重熔温度为570℃-571℃；2在优化的感应加热工艺条件下，半固态重熔坯料内部的温差在0℃-1℃；3半固态重熔过程使原始料坯中的α枝晶组织变成球团状和节杆状组织，满足了半固态触变成型的要求。

Data pre-processing technologies such as singular points elimination, registration and radius compensation are studied. Base on chord high difference algorithm, a new one called chord high difference-ratio algorithm is proposed to improve veracity and robusticity of singular points elimination. Then, a registration algorithm based on local surface reconstruction is proposed, which avoids infaust influence coming from single reference point error.

在弦高差法的基础上，提出了全新的弦高差—比法，提高了异常点剔除的准确性和柔韧性；提出了一种基于局部图形重构的重定位方法，该方法通过对特征球的最小二乘拟合，消除了单一参考点的精度对重定位的影响；在此基础上对重定位的误差进行了详细的分析，给出了精确的误差值，从数学的角度保证了重定位的精度；在三角网格法的基础上提出了基于Delaunay三角剖分的半径补偿新方法，有效改善了补偿矢量的计算效率和准确性。

The synthesis method of the invention is as follows: first, 5-amino-2-(p-aminophenyl)- benzoxazole and aliphatic diacid are respectively recrystallized; NMP is distilled; solubilizer is dried; second, in an atmosphere of nitrogen, after Py and NMP are mixed evenly and added to a sealed reactor, the solubilizer is added into the reactor, followed by the 5-amino-2-(p-aminophenyl)- benzoxazole, then the mixture in the reactor is stirred; second, in an atmosphere of nitrogen, the mixture in the second step is stirred and heated to 50-150 DEG C, then the aliphatic diacid is added, followed by TPP for condensation; fourth, after methanol is poured into the reactor, the sediment is separated out from the mixture, filtered, washed and dried, so the semi-aromatic polyamide containing oxazole ring is obtained.

本发明的合成方法如下：一、分别重结晶5-氨基-2-苯并唑与脂肪族二酸；蒸馏NMP；干燥增溶剂；二、在氮气气氛下，Py与NMP混匀后加入密封的反应器中，再加入增溶剂，然后加入5-氨基-2-苯并唑，搅拌；三、在氮气气氛下，将步骤二的混合液搅拌并升温至50℃～150℃后加入脂肪族二酸，再加入TPP后缩聚；四、再倾入甲醇析出沉淀，过滤，清洗沉淀，再干燥；即得到含唑环半芳香聚酰胺。

This paper discusses the concept and nature of recasts , the roles they play in second language acquisition and their related theoretical background.

该文阐明了重铸的概念、性质、在语言习得中的作用以及与之相关的理论研究背景，并从重铸与接纳的关系、学习者个人因素、语境、目标语的选择、不同类型的重铸等方面分析了重铸在第二语言学习中有效性的影响因素，最后探讨了重铸对我国二语教学和学习的启发和意义。

Organic solvent repetition crystallization method showed that 60% ethanol was the suitable solvent system. After 5 times repetition crystallization, the purity of product can be up to 98%, and the crystal state was yellow club-shaped, length of which is above 3mm. The productivity of this method is 30.01±1.26%, which is 2 times high than water repetition crystal method. So this method has good exploitation foreground.

有机溶剂重结晶法，选择60%浓度乙醇为适合的二氢杨梅素结晶体系，经过5 次重结晶后，产品的纯度可达98%，晶体为黄色、棒状，长度可达3mm，结晶产率为30.01±1.26%，较水重结晶法高2 倍左右。

Main Electronics scales weighing equipment: electronic truck scale, electronic small loadometer, electronic weighing scales, counting scales, electronic platform scales, cylinder scales, weigh modules, scales and other fittings; explosion-proof, waterproof, moisture-proof scales; laboratory dedicated precision electronic balance, density balance, moisture analyzer; Autocontrol main aspects: automatic measurement of packaging systems, filling equipment, batching scales (dedicated to reactor, storage tank measurement), automatic batching systems; explosion-proof weighing system; laboratory testing equipment: Japan Sampoong, Switzerland TESA products; three million, the second element equipment; optical products; marble Detected platform equipment; Detect flat iron; hardware, tools, cutting tools and other industrial support products; Xuzhou Heng Electrical Measurement and Control Equipment Ltd. has been since the opening, uphold professional operation and enthusiasm of the Service purpose, to provide customer satisfaction with products and customer satisfaction to allow after-sales service.

电子衡器称重设备主营：电子汽车衡、电子小地磅，电子计重秤、计数秤，电子平台秤，钢瓶秤，称重模块，衡器配件等；防爆、防水、防潮秤；实验室专用的精密电子天平、密度天平、水份测定仪；自动控制方面主营：自动计量包装系统，灌装设备，配料秤（专用于反应釜、储罐的计量），自动配料系统；防爆称量系统；实验室检测设备：日本三丰、瑞士TESA产品；三次元、二次元设备；光学产品；大理石检测平台设备；铸铁检测平板；五金件、工具刀具等工业配套产品；苏州天恒机电测控设备有限公司自开业以来，秉持专业经营与热忱服务之宗旨，提供客户满意的产品及让客户满意的售后服务。

Recently, acute poisoning frequently happens which is caused by the release of chlorine in the production process,as the dense gas,chlorine dispersion model contain continuous diffusion and instantaneous dispersion, and we can separately use dense gas flat plume model and dense gas box puff model to calculate the density of the gas.

risk analysis ； dispersion ；近来，生产过程中氯气泄漏引起的急性中毒事故频繁发生，作为重气的氯气泄漏扩散分为连续扩散和瞬间扩散二种模式，并且分别应用重气云羽平板模型和重气云团盒子模型来计算重气扩散浓度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。